The iSilencer3.0® is the most direct and simple upgrade for any USB port, it lowers noise/RFI/EMI by up to 40dB or 100x.

It is ideal for the home and on-the-go improvement of all devices connected to the USB port, e.g. Computer Servers, Mixers, Hard drives etc. Regardless of the system; from US$10,000 to US$100, the iSilencer3.0® terminates noise, in its tracks.

Active Noise Cancellation® by AMR/iFi now rolling out across the range

Active Noise Cancellation® by AMR/iFi is in-house technology developed to cut out noise in a very significant way in the audio field. It is now the bedrock of iFi signal/power products because…they need to address the issue of noise in both signal and power situations.

What is the Active Noise Cancellation circuit design?

Drawing from the military field (specifically the Thales Spectra radar cancellation system deployed in the French Dassault Rafale jet fighter), iFi adapted this technology to exclusively introduce the Active Noise Cancellation® (ANC®) audio power system. It is now a cornerstone of the ever-improving iFi USB audio technology, looking for new products to feature ANC® ，and ANC+®.

An air defence radar is transmitting at a certain frequency; the signal is bouncing off the aircraft; a receiver on board the aircraft picks up the signal and a computer analyses its base frequency/modulations and an identical, out-of-phase signal is generated by an on board system to cancel out the enemy radar signal.

By generating a signal identical to the noise signal but in the exact opposite phase, it actively cancels all the incoming noise. ANC® is the perfect ‘antidote’ for power supply noise, the bane of USB audio.

ANC® measured, noise drops by 100 times or 40dB in comparison to the Common Noise Filter. Sonically, the background and inner resolution to recordings is enhanced.

More than one iSilencer3.0® brings exponential benefit

The iSilencer3.0® can be used not only at the active USB ports but also at unused USB ports where it will reduce radiated EMI and as the ANC® circuitry is bi-directional and usually as all USB ports share one power bus. The iSilencer3.0® cuts noise, system-wide for all USB ports, including for example an active port that has another iSilencer3.0® plugged-in which is the one connected to another device.

Multiple ANC® circuits will simply double the noise reduction each time the number of ANC® units is doubled. So 2 x iSilencer3.0® will kill double the noise of a single-one and four for example will kill four times the noise of a single one; if they are plugged into the same block of USB Ports and even though only one iSilencer3.0® has one device (e.g. DAC) connected into it.

USB3.0 technology, at the cutting-edge

It is now a hallmark of all the latest iFi signal and power products to be USB3.0 standard. First USB3.0 is backwards compatible with USB2.0. Second, in terms of the specifications, USB3.0 is superior to USB2.0 e.g. the wire gauge specification is more exhaustive and the connections are better.

Highly recommended – not just for lowering noise…, December 9, 2016
Bob Welsh

Very cool product! I expected lower noise floors on my various DACs, and it did lower the noise somewhat. But the real improvement was an increase in dynamics, more clarity, more detail (without brightness), a sense of ease, and more “bloom”. Unexpected but very welcomed! Highly recommended.

After trying ifi audio iPurifier 2 and DC Purifiers with success, I was inspired and decided to give iSilencer a shot. Not expecting much, I found the latter works very well with the formers but on the other end of the USB chain. Highly recommended!

iSilencer3.0 – If USB audio noise bugs you, get this thing. It works.,

May 24, 2017
Mark R Wietstock

I read all the reviews, and thought a LONG time before buying this gizmo. I recently bought a very IN-expensive remote-controlled, DC-powered MP3 player that runs songs from a USB drive or SD card. It’s a convenient little device, but unfortunately, it also transmits a lot of “jitter” into the audio as it reads MP3 files from the USB drive … a common problem with USB-based audio devices, I guess, because they transmit both power and audio data across the same circuit.

Thus, I had to decide between, e.g., tossing the player; gritting my teeth and living with the noise, or investing five times what the player cost to buy this filter, in the HOPE that it would provide enough noise reduction to make it worth the investment. I’m VERY happy to report … it WAS worth it. This thing actually works. It doesn’t totally eliminate the noise, but substantially reduces it … to the point where it’s hardly noticeable through headphones, and almost completely absent through speakers.

I love the fact that the iSilencer actually works as advertised. Plugging this into either my pc or phone makes the audio coming out of my dac/amp cleaner and clearer. I also noticed an increase in sound stage and better imaging/instrument placement. The only kind of downside to the iSilencer is that it makes music slightly less dynamic. I like how the treble is tamed and becomes more coherent but the bass is also slightly subdued, although I do notice that the bass is tighter and quicker. It also eliminates the humming and clicking noises (jitter) I would hear in music.